Daim ntawv khob PE yog ib qho tshiab thiab zoo rau ib puag ncig piv rau cov khob yas ib txwm muaj. Nws yog ua los ntawm ib hom ntawv tshwj xeeb uas tau coated nrog ib txheej nyias ntawm polyethylene, ua rau nws tsis ntub dej thiab zoo tagnrho rau kev siv ua khob pov tseg. Kev tsim cov ntawv khob PE tau yog ib txoj kev taug kev ntev thiab txaus nyiam nrog ntau yam kev cov nyom thiab kev tawg ua ntau yam.
Keeb kwm ntawm PE khob ntawv tuaj yeem taug qab rov qab mus rau thaum ntxov xyoo 1900, thaum cov khob ntawv tau qhia thawj zaug ua lwm txoj hauv kev huv thiab yooj yim rau cov khob ceramic lossis khob iav. Txawm li cas los xij, cov khob ntawv thaum ntxov no tsis ruaj khov heev thiab muaj qhov nyiam xau lossis tawg thaum ntim nrog cov kua kub. Qhov no ua rau kev tsim cov khob ntawv coated-wax hauv xyoo 1930, uas tiv taus cov kua thiab cua sov ntau dua.
Xyoo 1950, polyethylene tau pib siv ua cov khoom siv los ua cov khob ntawv. Qhov no ua rau muaj peev xwm tsim cov khob uas tsis ntub dej, tiv taus cua sov, thiab zoo rau ib puag ncig dua li cov khob uas muaj roj hmab pleev. Txawm li cas los xij, txog xyoo 1980 cov thev naus laus zis thiab cov txheej txheem tsim khoom tsim nyog rau kev tsim cov ntawv khob PE ntawm qhov loj tau tsim kho tag nrho.
Ib qho ntawm cov teeb meem tseem ceeb hauv kev tsim cov ntawv khob PE yog nrhiav qhov sib npaug ntawm lub zog thiab kev ywj pheej. Daim ntawv yuav tsum muaj zog txaus los tuav cov kua yam tsis xau lossis tawg, tab sis kuj tseem ywj pheej txaus los ua lub khob yam tsis muaj kev rhuav. Lwm qhov teeb meem yog nrhiav cov khoom siv raw uas xav tau los tsim cov ntawv khob PE ntau heev. Qhov no xav tau kev koom tes ntawm cov chaw tsim ntawv, cov chaw tsim khoom yas, thiab cov chaw tsim khoom khob.
Txawm hais tias muaj cov teeb meem no los xij, qhov kev thov rau cov khob yas uas tsis ua rau ib puag ncig puas tsuaj thiab ruaj khov tau txuas ntxiv loj hlob hauv xyoo tas los no. Daim ntawv khob PE tam sim no siv dav hauv cov khw kas fes, cov khw muag khoom noj ceev ceev, thiab lwm yam kev lag luam kev pabcuam zaub mov ua ib qho kev xaiv zoo rau ib puag ncig. Nws kuj tseem nrov zuj zus ntawm cov neeg siv khoom uas txhawj xeeb txog qhov cuam tshuam ntawm cov yas pov tseg rau ib puag ncig.
Xaus lus, kev tsim cov ntawv khob PE tau yog ib txoj kev taug kev ntev thiab zoo kawg nkaus uas tau siv ntau xyoo ntawm kev tshawb fawb thiab kev txhim kho. Txawm li cas los xij, qhov kawg yog cov khoom uas zoo rau ib puag ncig thiab muaj txiaj ntsig zoo. Raws li cov neeg siv khoom xav tau cov khoom lag luam zoo rau ib puag ncig txuas ntxiv mus, nws yuav zoo li peb yuav pom kev nce qib ntxiv hauv kev tsim khoom thiab kev tsim cov khoom ntsuab xws li ntawv khob PE.
Lub sijhawm tshaj tawm: Plaub Hlis-21-2023